Furnace base unit



Feb. 14, 1939. Q G} E T ELLE 2,146,887

FURNACE BASE UNI 1' Filed Jan. 10, 1955 3 Sheets-Sheet 1 I H E INVENTOR.

Charles G Esfel-le J ATTORNEY.

Feb. 14, 1939. c, TELLE 2,146,887

FURNACE BAS E UNIT Filed Jan. 10, 1935- 3 Sheets -Sheet 2 8 nu-u f Z2 a E r I p E H 2 a c c 7 h u o c 2 /6 il o o I c F l 5 INVENTOR.

BY 1%? ATTORNEY.

Feb. 14, 1939. c. G. ESTELLE FURNACE BASE UNIT Filed Jan. 10, 1935 3 Sheets-Sheet 3 ATTORNEY.

Patented Feb. 14, 1939 UNlTED STATES TENT OF ICE FURNACE BASE UNIT 9 Claims.

- The present invention relates to heating plants and more particularly to an improved base unit to be used with boilers and furnaces requiring a separate supporting means.

One object of the present invention is to utilize the base unit for heating a hot water supply.

Another object of the present invention is to provide a base unit with a portion suitable for supporting an oil or gas burning apparatus.

A further object being to provide an improved method of circulation through the base, boiler, and heating system.

With the above and other objects in View as will be hereinafter apparent the several novel features of the invention in its preferred form will be more fully described in the accompanying drawings in which: I

Fig. 1 is a side view of the boiler and improved base unit.

Fig. 2 is a fragmentary front view of Fig. 1 showing the position of the fuel combustion apparatus.

Fig, 3 is a horizontal section taken along the line aa of Fig. 1

Fig. 4 is a central vertical section taken along the line bb of Fig. 3.

Fig. 5 is a vertical section of the base member taken along the line -0 of Fig. 3.

Fig. 6 is a horizontal section taken along the line dd of Fig. 1.

Fig. 7 is a fragmentary vertical section of a water cooled fuel dispensing element.

Fig, 8 is a transverse sectional view of the fuel dispensing element taken along the line e-e of Fi 7.

Fig. 9 is a perspective View of the hood 40.

Fig. 10 is a view of the cover plate ll showing the elongated slots for supplying air to the burner apparatus.

Fig. 11 is a wiring diagram of the electric cirsuit to the control valve, thermostat, aquastat, and fuel dispensing motor.

The invention therefore consists of a base unit 2 constructed to receive a portion of the water 45 supply of the heating system. The upper face of the base is adapted to receive a boiler 4, the base and boiler being connected by the pipes 6 and 8.

The pipe 6 entering the base near its upper portion and the pipe 8 entering the base near the 50 bottom.

The base 2 is provided with inner and outer walls it and It. The space M between the walls being utilized for carrying the water supply. The inner wall [0 of the base is preferably provided 55 with a refractory material I and having its upright sections Ill and I0" inclined slightly inwardly at the top.

Within the space M there is positioned a series of bafile plates and a pump it for circulating the water to all parts of the base unit. The bafiie plate It! (Fig. 6) is so positioned as to form a separate compartment 26 within the space M and the baffle plate .22 is positioned to direct the water toward the pump I6. Also within the space i 4 there is provided a funnel shaped baflle 26 for directing a portion of the water through the pipe 28, which is connected through the wall ll of the base unit to a fuel dispensing element for supplying water thereto, as shown best in Fig, 7. Conveniently located within another portion of the outer wall I2 is an inlet 38 for returning the water to the space i 4 after it has circulated about the fuel dispensing element.

Positioned adjacent the outlet pipe 6 is a coil 34, through which the hot water supply is circulated and preferably stored within a hot water tank 36,

Extending outwardly from the base 2 is a portion 2' provided with removable covers 5 and H. The cover if is provided with horizontal and elongated slots H for supplying air to the fuel combustion apparatus. The extended portion 2 is utilized to form a supporting means and partial structure for the fuel combustion apparatus. The flat horizontal section 2 of the portion 2' is provided with a channel 38 of substantially semicircular form over which is placed a hood 4!]. The hood 40 is secured to the portion 2 by screws orbolts 4!, and is so constructed as to provide a space 42 in which is operated a blower 33 by a motor 44. The motor is secured to the base by the bolts [3, and having one end of its rotating shaft adapted to operate the blower 43 and supported within the bearing ll, which is likewise secured to the base member. The other end of the motor shaft is connected to a shaft 48 by a flexible coupling 53 for operating the pump is. The motor 44 is also utilized to operate a fuel pump 52 which is shown having a fuel inlet pipe 53 and an outlet pipe 54 connecting with the fuel dispensing nozzle 55. The fuel dispensing nozzle is provided with a cooling member 58. The cooling member being formed about the nozzle 56 and having a space 66 formed between the walls 62 and 54 through which the water is circulated by the aid of the baffle plate 26 and the circulating pump it. The pipe 28 leading from the baffle plate 25, is connected to the inlet opening 66 of the nozzle cooling member. The outlet 68 of the cooling member is connected with the pipe 30 for returning the water to the base unit.

Referring again to the pipes 6 and 8 which connect the base unit with the boiler, the pipe 6 is provided with a check valve 10, a cut-off valve 12 and a union [4. The purpose of the union 14 being to facilitate the assembling of the base unit and the boiler. Likewise the pipe 8 is provided with a cut-ofi valve 16 and a union [8, and also a valve 89 which is preferably operated by a solenoid 8| or other known electrical operating means for regulating the flow of water from the boiler to the base unit. The radiator return pipe 82 enters the base preferably through the same opening as the pipe 8, the water being conveyed by the pipe 84 beneath the wall Ill and toward the center of the base unit.

Positioned within the base 2 is a temperature sensitive element, or aquastat 85 adapted to register the temperature of the water in the base and having means associated therewith foropening and closing an electrical circuit for controlling the motor 44 and the valve 89. Located at some convenient place outside the boiler and base unit is a thermostat 86. The thermostat likewise being equipped to operate an electrical circuit controlling the motor 44, and operating the opening and closing of the valve 89. The aquastat and thermostat may operate independently of each other, the aquastat controlling the operation of the motor and valve for circulating the water through the boiler and base unit, and the thermostat operating to control the motor and valve for circulating the heating medium through the radiation system.

Referring to Fig. 11, the thermostat 86 and the aquastat are shown to be of the bi-metallic type. When the switch 2| is closed, the contact members within the thermostat and aquastat are normally incontact. Current will flow into the solenoids 23 and 25 which will become energized. The plate 21 connected with the switch 29 by the member 31, which is normally held upwardly by the spring 21 will be drawn downwardly toward the solenoids, closing the switch and operating the motor 44. At the same time the solenoids 33 and 35 will also become energized, but the solenoid 33 is wound to be more powerful than the solenoid 35 and will move the plate 3'! which is attached to the valve stem 31 upwardly, closing the valve 80. When the temperature in the radiation system has reached a pre-set degree, the thermostat which is conveniently located about the premises will break contact. This will break the circuit and deenergize the solenoids 25 and 33. If the aquastat isnot operated to break the circuit to the solenoids 23 and 35, the valve will be opened by the attraction of the plate 31 to the solenoid 35. The fuel motor 44 will continue to operate as the solenoid 23 still being energized will keep the switch 29 closed. A resistance 39 is preferably placed in one of the conducting lines for reducing the flow of current through the contact point of the aquastat and thermostat. 6'5

Switches 4| and 43 are provided to operate the valve and fuel motor on either the aquastat or thermostat control. For example, if there is no need for heating the hot water supply, the aquastat may be cut out by the switch 43 and if the 7o boiler is to be used for heating the water supply only the thermostat may be cut out by the switch 4| The building of the oil or gas burner into the base unit has many desirable and practical feafi t'ures; I'he basemaybe'used to support and form part of the burner structure, the mechanism of the burner may be conveniently inclosed which greatly improves the appearance of the furnace and reduces the noise. The pump may be operated directly off the burner motor shaft, which dispenses with the necessity of a separate motor for operating the circulating pump. The cost of the manufacturing of the burner is reduced considerably by the utilization of the base to form part of the burner structure.

The improved base unit may be substituted for the ordinary base unit of a coal burning furnace that may be already set up and in operation, or maybe installed with this conventional type boiler or furnace in new installations. The purpose being to utilize as much space as possible surrounding the fire box for heating a portion of the water within the system to be used primarily for heating the hot water supply. Also it may be desirable under certain circumstances to operate a heating unit having substantially the same or similar operating principles as the base unit, as it is not always necessary to have the boiler resting upon the unit for efficient operation. The

unit may be placed at the side of the boiler, or

other convenient location to fit the particular situation.

In operation when the base is substituted for the ordinary base member and connected with the boiler by the pipes 6 and 8, as has already been f described, the temperature of the water in the base is regulated by the aquastat 85 controlling the current operating the motor 44 and the valve 89. When the temperature of the water in the base drops to a certain predetermined point, the aquastat closes a circuit operating the motor and opening the valve 80. This allows the water to circulate through the base and boiler by means.

of the pipes 6 and 8. When the temperature of the water has reached a pre-set degree, the aquastat will operate to shut off the burner motor. When heat is required in the radiation system the thermostat will operate to close the circuit operating the burner motor and closing the valve 80.

As the water is circulated through the base by the Fig. 6 before again being forced into the boiler by the pump Hi. When the temperature of the thermostat has reached a pre-set degree it will operate to shut off the burner motor. If heat is required for the hot water supply the aquastat will function to open the valve 80 and operating the burner motor 44 again for circulating the water through the base and boiler as has hereinbefore been described.

When it is necessary to increase the amount of water in the heating system, an intake pipe 96 is provided with a control valve 98 for this purpose.

While I have shown and described a preferred form of my invention it will be understood that I have done so merely for clarification and that my invention is best defined in the following claims.

I claim:

1. In combination, a boiler having a separate water compartment for heating a hot water supply, an'inlet' and outlet means for connecting the boiler with the said water compartment, a radiation system connected between the boiler and said separate water compartment, means acting when the temperature surrounding the said radiation system is below a predetermined degree for closing said inlet means.

2. In combination, a boiler, a base having a water compartment therein, a radiation system connected with the boiler and base unit, means for heating said boiler and base unit, inlet and outlet connecting means for connecting the boiler with the water compartment of the base unit, a valve in the inlet connecting means for regulating the circulation of water through the said system, an electriccircuit, means acting when the temperature surrounding the said radiation system is below a predetermined degree for electrically closing said valve and operating a circuit closing means for operating the said heating means.

3. In combination, a boiler, a base for supporting said boiler having a water compartment therein, said compartment being divided into a plurality of sections, water inlet and outlet means connecting the said boiler with different sections of the water compartment of the base member, a circulating means within said water compartment for forcing the water from one of said sections into the other and toward the water outlet means.

4. In combination, a water heating system having a hot water boiler, a base for said boiler having a water compartment therein, a radiation system connected with the boiler and base member having its feed pipe connected with the boiler and its return pipe connected with the said base, heating means for said base and boiler, inlet and. outlet means for connecting the water compartment of the base member with the boiler, a valve in said inlet connecting means for controlling the flow of water therethrough, an aquastat positioned in said base for opening said valve when the temperature of the water has dropped to a predetermined point and a thermostat for closing said valve when the temperature surrounding the said radiation system is below a predetermined degree.

5. A base for a Water boiler having a plurality of water compartments, said base having an extended portion for receiving a fuel combustion apparatus, a pump forcing water from one compartment to the other, an inlet pipe in one of said compartments and an outlet pipe connected to another of said compartments for connecting the boiler with the base, means associated with said base for utilizing a portion of the water in said compartments for cooling the fuel combustion apparatus. i

6. In combination, a boiler having a separate water compartment, an inlet and outlet means for connecting the boiler with the said water compartment, a radiation system connected between the boiler and said separate water compartment, means for heating said boiler and compartment, means operative for opening and closing the inlet means from the boiler to the water compartment, and temperature operated means for controlling the opening and closing means.

'7. In combination, a boiler having a separate compartment, water inlet and outlet means connecting the boiler with the said compartment for circulating water therethrough, means for heating said boiler and compartment, means for heating a hot water supply by said water circulation, a radiation system connected between the boiler and said compartment, means operative for opening and closing the inlet means from the boiler to the compartment, and temperature operated means for controlling the opening and closing means.

8. In combination, a boiler having a separate compartment, water inlet and outlet means connecting the boiler with the said compartment for circulating water therethrough, means for heating said boiler and compartment, means for heating a hot water supply by said circulation, a radiation system connected between the boiler and said compartment, means operative for opening and closing the inlet means to said compartment, an aquastat responsive to the temperature of the water within said system for controlling the operation of the heating means.

9. In combination, a boiler having a separate compartment, water inlet and outlet means connecting the compartment with the boiler for circulating water therethrough, means for heating said boiler and compartment, means for heating a hot water supply by said circulating water, a radiation system connected between the boiler and compartment, means operative for opening and closing the inlet means from the boiler to the compartment, a thermostat responsive to the temperature of the space heated by said radiation system for'controlling the operation of the heating means.

CHARLES G. ESTELLE. 

